Answer: 4%
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Work Shown:
A = old value = 75
B = new value = 78
C = percent change
C = [ (B-A)/A ] * 100%
C = [ (78-75)/75 ] * 100%
C = (3/75) * 100%
C = 0.04 * 100%
C = 4%
The positive C value means we have a percent increase.
The price has increased by 4%
